251566550

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{1489}}^1$

素因数の和:1641

約数の個数: 48

約数和(自身を含む): 487766400

約数和(自身を除く): 236199850

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 109, 155, 218, 310, 545, 775, 1090, 1489, 1550, 2725, 2978, 3379, 5450, 6758, 7445, 14890, 16895, 33790, 37225, 46159, 74450, 84475, 92318, 162301, 168950, 230795, 324602, 461590, 811505, 1153975, 1623010, 2307950, 4057525, 5031331, 8115050, 10062662, 25156655, 50313310, 125783275, 251566550]

約数ペア:

[(1, 251566550), (2, 125783275), (5, 50313310), (10, 25156655), (25, 10062662), (31, 8115050), (50, 5031331), (62, 4057525), (109, 2307950), (155, 1623010), (218, 1153975), (310, 811505), (545, 461590), (775, 324602), (1090, 230795), (1489, 168950), (1550, 162301), (2725, 92318), (2978, 84475), (3379, 74450), (5450, 46159), (6758, 37225), (7445, 33790), (14890, 16895)]